A sustainable and multifunctional magnetic sulfonated tragacanth–MWCNT-COOH/ZnCuFe₂O₄ nanobiocatalyst for the efficient synthesis of bioactive polyhydroquinolines
Shefa Mirani Nezhad, Armin Rahmavand, Ehsan Nazarzadeh Zare, Seied Ali Pourmousavi, Alireza Ashrafi Fashi, Soran Ghadermazi, Saba Fakhlaee, Taotao Zhao
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引用次数: 0
Abstract
The development of efficient heterogeneous catalysts plays a crucial role in facilitating sustainable and high-yield organic syntheses. In this study, a multifunctional nanocomposite based on sulfonated tragacanth, carboxylated multi-walled carbon nanotubes, and ZnCuFe₂O₄ nanoparticles (STrag/MWCNT-COOH/ZnCuFe₂O₄) was designed and synthesized. The fabrication involved a modified sol–gel synthesis of ferrite nanoparticles, chemical functionalization of tragacanth and MWCNTs, and subsequent integration into a hybrid composite. Characterization using field emission scanning electron microscopy (FESEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET), energy-dispersive X-ray spectroscopy (EDX), elemental mapping, and vibrating sample magnetometry (VSM) confirmed the formation of a well-dispersed, porous, and magnetically responsive nanocomposite. The material demonstrated excellent catalytic efficiency in the one-pot synthesis of diverse polyhydroquinolines under mild reflux conditions, providing high yields (87–95%) in short reaction times (35–70 min). The resulting polyhydroquinolines exhibited antioxidant activity (DPPH scavenging up to 79.4%) and antibacterial activity (inhibition zones of 8–14 mm). Furthermore, the nanocomposite maintained its catalytic performance over multiple reuse cycles, highlighting its potential as a versatile platform for environmentally friendly catalysis and bioactive molecule development.
期刊介绍：
Carbon Letters aims to be a comprehensive journal with complete coverage of carbon materials and carbon-rich molecules. These materials range from, but are not limited to, diamond and graphite through chars, semicokes, mesophase substances, carbon fibers, carbon nanotubes, graphenes, carbon blacks, activated carbons, pyrolytic carbons, glass-like carbons, etc. Papers on the secondary production of new carbon and composite materials from the above mentioned various carbons are within the scope of the journal. Papers on organic substances, including coals, will be considered only if the research has close relation to the resulting carbon materials. Carbon Letters also seeks to keep abreast of new developments in their specialist fields and to unite in finding alternative energy solutions to current issues such as the greenhouse effect and the depletion of the ozone layer. The renewable energy basics, energy storage and conversion, solar energy, wind energy, water energy, nuclear energy, biomass energy, hydrogen production technology, and other clean energy technologies are also within the scope of the journal. Carbon Letters invites original reports of fundamental research in all branches of the theory and practice of carbon science and technology.
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